I have run with my GTB2260 so far...
PD150's-- Made 215whp/388#' Car drove just fine. A little on the hazy side especially when the temps got above 70*f. Not enough fuel to utilize the potential of the turbo. I would recommend a GTB1756/2056 with these.
R783's-- Made 244whp/435#' Car drives even better, more responsive throttle across the power band, less smoke, and more power. Yet they still don't have enough fuel to utilize the turbo. I highly recommend these unless you plan on rods, ported head and all the supporting mods. I recommend GTB2056/2260 for these